Index: lldb/test/API/tools/lldb-server/thread-name/main.cpp
--- lldb/test/API/tools/lldb-server/thread-name/main.cpp.orig
+++ lldb/test/API/tools/lldb-server/thread-name/main.cpp
@@ -4,6 +4,8 @@
 void set_thread_name(const char *name) {
 #if defined(__APPLE__)
   ::pthread_setname_np(name);
+#elif defined(__OpenBSD__)
+  ::pthread_set_name_np(::pthread_self(), name);
 #elif defined(__FreeBSD__) || defined(__linux__)
   ::pthread_setname_np(::pthread_self(), name);
 #elif defined(__NetBSD__)
